Science CFA (2.2) 2024-2025

Front

What is a crumple zone in vehicle design?

Back

A crumple zone is a designated area of a vehicle that is designed to deform and absorb energy during a collision, thereby reducing the force transmitted to the occupants.

Front

How do seat belts and airbags protect passengers during a collision?

Back

Seat belts and airbags decrease the force on passengers during a collision by increasing the time over which the passengers come to a stop.

Front

What is the principle of conservation of mass in nuclear processes?

Back

During nuclear processes, the total number of neutrons and protons is conserved, meaning that the total mass of the system remains constant.

Front

What is the role of orexin in the body?

Back

Orexin is a neurotransmitter produced in the hypothalamus that regulates various processes, including sleep, appetite, and body temperature.

Front

How can city officials evaluate solutions to environmental problems?

Back

City officials can choose the best solution by selecting the one that meets most of the city’s criteria.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, force is equal to mass times acceleration (F = ma). This means that an increase in mass or acceleration will result in an increase in force.

Front

What is the significance of time in reducing impact force during a collision?

Back

Increasing the time over which a collision occurs reduces the force experienced by the occupants, as force is inversely proportional to the time taken to stop.

Front

What factors should be considered when designing safety features in vehicles?

Back

Factors include the effectiveness of the feature in reducing injury, the cost of implementation, and compliance with safety regulations.

Front

What is the function of airbags in vehicles?

Back

Airbags are designed to inflate rapidly during a collision to provide a cushion that reduces the risk of injury to passengers.

Front

What is the importance of evaluating multiple solutions to a problem?

Back

Evaluating multiple solutions allows decision-makers to choose the most effective and feasible option based on various criteria.